Robot vacuum cleaner



FIG. 1 is a top perspective view of a robot vacuum cleaner showing our new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is an enlarged view of the portion indicated by line 9 in FIG. 1 ; and,

FIG. 10 is an enlarged view of the portion indicated by line 10 in FIG. 2 .

The broken lines in the drawings depict portions of the robot vacuum cleaner that form no part of the claimed design. 

CLAIM The ornamental design for a robot vacuum cleaner, as shown and described. 